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As the fourth-season finale opens, Mandy (Mia Kirshner) has been offered complete immunity in exchange for revealing Marwan's (Arnold Vosloo) location. While Jack (Kiefer Sutherland) waits for the deal to be signed by Logan (Gregory Itzin) and sent over, Aaron Pierce (Glenn Morshower) reveals that Mandy was involved in an earlier attempt (season two) on Palmer's (Dennis Haysbert) life. But Palmer tells Logan to go ahead and sign her pardon, and she, in turn, reveals the location of her planned rendezvous with Marwan in downtown Los Angeles. While Jack races to capture Marwan alive in order to find and destroy the missile, Logan gets a call from Su Ming (Ping Wu) at the Chinese consulate, who tells him that they know Jack led the assault and kidnapping earlier. The Chinese demand that Jack be turned over to them to face "justice." As the CTU team faces down the nuclear threat, Logan and Cummings (John Allen Nelson) devise a dastardly plan to make sure that Jack doesn't implicate the U.S. government when he's turned over to the Chinese.